Zero permeability cubes impose no-flow boundaries within a defined region of the simulation grid, approximating the drainage depletion from offset wells or stages. This document explains how to define and activate zero permeability cubes in ResFrac.
Wellbore drilling times allow you to introduce new wells into a simulation partway through, rather than having all wells present from the start. This document explains how to use drilling times for parent/child well modeling and restart simulations.
Water solutes define the rheological properties of fluid additives — friction reducers, guar, cross-linked gels, tracers, and more — within ResFrac. This document explains how to configure water solutes and when to use each solute type.
Well Data Labs and ResFrac collaborated with Devon Energy is demonstrate an automated workflow for calibrating ResFrac models to Sealed Wellbore Pressure Monitoring (SWPM) data from HFTS 1 Phase 3 refrac project in the Eagle Ford. The workflow we followed was the same as that in our blog post tutorial on using Volume to First Responses (VFRs) from SWPM.
ResFrac lends itself particularly well to the optimization of hydraulically stimulated geothermal wells. ResFrac not only computes fracturing and reservoir flow simultaneously, but also calculates thermal stress changes and supercritical fluid properties. Fowler and McClure (2021) evaluate three geothermal designs: a closed-loop, a closed-loop with thermally conductive fractures, and an open-loop multi-lateral.
HFTS 2 is one of the highly measured hydraulic fracturing pads in the world. In 2021, the HFTS 2 consortia and ResFrac collaborated on a modeling study to incorporate all the advanced diagnostics in HFTS 2 into a single, comprehensive model. This model was then employed in an automated optimization workflow to assess opportunities to improve NPV by adjusting well spacing, proppant loading, fluid loading, cluster spacing, and landing zone. Pudugramam et al. presented the ResFrac model calibration and optimization in URTeC 3723620 in 2022, showing a 60% possible improvement in NPV by optimization of well placement and completion design.
For this month’s ResFrac Office Hours, we had a presentation from Jiehao Wang, Geomechanics Specialist with Chevron, titled “Drainage Fracture Height Characterization Using Rayleigh Frequency Shift Distributed Strain Sensing (RFS-DSS) in a Vertical Monitoring Well from HFTS-2.”
For this month’s Office Hours, we had a discussion on how to match perforation erosion and uniformity in ResFracPro, and best practices on integrating StageOpt and ResFracPro into a single workflow.
For this month’s Office Hours, we had a presentation from Serhii Kryvenko, Reservoir Engineer on ExxonMobil’s Unconventional Tech Team, titled “Proppant Trapping and Washout in Rough Hydraulic Fractures.”